Imaging Analysis of Low Grade Myofibroblastic Sarcoma

Objective To discuss imaging features of low grade myofibroblastic sarcoma and improve its diagnostic capacity.Methods A retrospective analysis was made on plain film,CT and MRI of 8 cases with pathologically approved low grade myofibroblastic sarcoma.Results In the 8 cases of low grade myofibroblastic sarcoma,5 cases occurred in soft tissue,3 cases in long bones;3 cases had relatively distinct boundary on CT in soft tissue,2 cases of them showed a great deal of irregular calcification,which were obviously heterogeneous enchanced in arterial phase,only one was more obviously enhanced in venous phase.Tumors showed long T1,long T2 signals on MRI,and were markedly enhanced.3 cases in long bones presented as patching,worm eaten destruction of bone,and sclerosis edge,calcification and periosteal reaction were not be seen in them,which showed long T1,long T2 signals on MRI,and obvious enhancement could be found around tumour,there was no enhancement in central region of tumour.Conclusion Low grade myofibroblastic sarcoma is a disease of low incidence,and has no imaging features,the final diagnosis depends on pathological results..